An unknown object, perhaps a cosmic string, was detected at the Milky Way’s galactic center in 2016 that could have profound implications for understanding gravity, space-time and the universe itself. Cosmic strings, galaxy-sized filaments of raw energy, may be threaded through spacetime, according to some theories. At the Big Bang, our universe exploded into being, expanded at a fantastic speed and cooled, perhaps cracking the fabric of the universe with hairline fractures.
